Valve for corliss engines and the like.



G. G. BURTON. VALVE FOR GOELISS ENGINES AND THE LIKE. APPLICATION FILED MAB.8,1911.

Patented Sept. 2, 1913.

L A Ma I STATES PATENT OFFICE.

CHARLES -G. BURTON. 0F LAKEWOOD, OHIO, ASSIGNOR OF ONE-HALF TO ROBERT D.

BEA'ITY, OF CLEVELAND, OHIO.

VALVE FOB, COBLISS ENGINES AND THE LIKE.

Specification of Letters latent.

Application filed March 8, 1911.

To all whom it may concern:

Be it known that I, CHARLES G. BURTON, a citizen of the United States, and a resident of Lakewood, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Valves for Corliss Engines and the Like, of which the following is a specification, the principle of the invention eing herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

It is a well known fact that more or less difliculty has always been encountered in the operation of the valves in Corliss engines, due to a tendency for them to stick so as to remain open when they should be closed, and thus correspondingly waste power in the formof steam. An adjustment of the operatingmechanism, which, as well understood, involves the use of gravity-actuated parts including a dash-pot, so as to secure proper operation of the valve under one condition of pressure and load does not insure such operation under a different pressure and load, and so far as I am aware, no attempt to overcome this difficulty has heretofore succeeded. By the construction, however, which constitutes the present invention, I have secured entirely successful operation in the particular noted, such construction consistin of the means hereinafter fully described an particularly pointed out in the claims.

The annexed drawin and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing :Fi re 1 is abroken central longitudinal section of the cylinder of a Corliss engine showing a valve therefor constructed in accordance with the present invention; Fig.2 is a similar section of such valve, but on a plane spaced from that of Fig. 1 as indicated by the lines 1-1 and 2-2, Fig. 3, which respectively indicate the planes of the two sections in question; Fig. 3 is a side elevational view of the valve within its casing; Fig. 4 is a similar view of the valve by itself; and Fig. 5 shows a portion of the valve as viewed in the opposite direction from that of Fig. 4.

Referring to the more or less general view of Fig. 1, it will nevertheless be noted that only so much of the enginecylinder 1 is illustrated as is necessary to show the housing or seat 2 for the valve, and the steam chamber 3 from which the steam is admitted into the cylinder through. such housing and the valve seated therein While the piston 4 is shown,'tl1e other ap urtenant parts of the cylinder, as well astleg actuatmg mechanism for the valve itself,v have been omitted, since they are nota' pa'rtof the invention in ha'ndand may be of any pproved construction. It may also he exbored out if desired. Such casing is of cylindrical form and substantially mid-way between its ends is provided with a series of slits, 0r apertures 5, through which the steam gains entrance into its interior from the steam chest 3.

The valve proper comprises in addition to the stem 6, two cup-like cylindrical members '7 mounted upon said stem with their ppen ends directed inwardly, as shown in ig. 4. As a result of this construction the steam admitted in the fashion just described into the interior of the casin is also equally free to enter within theho low valve portions. Its escape thence into the engine cylinder is controlled by ports 8 and 9 respectively formed in the walls of the casing and such valve portions, which ports register in certain positions of the valve, an larly about its axis, but are closed in ot er positions of the valve. Oscillation of the valve to thus bring the ports in question into register is effected by actuating mechanism of the usual construction, and for this reason not shown, as has already been explained. Such mechanism will, of course, be directly connected to one end or the other of the valve, or to a prolongation of its stem.

In addition to the ports 9 in the valve portions, which are thus adapted to register with the ports 8 in the casing that open into the engine cylinder proper, I provide a port 10 substantially directly opposite the aforesaid ports in each valve part (see Figs. 1 and 5). These ports 10 open against the blank wall of the casing 2 and are surrounded by strips 11' of suitable packing which are seated in, grooves or recesses, one on each side of the port. In addition, encircling rings 12 of packing are similarly held adjacent to each end of the respective valve portions. As a result of the arrangement of 'were the steam-to gain entrance on the top of the valve, as it is termed. The circular rings it should furthermore be remarked do not revolve with the valve-but fit the cylindrical'cas'ing snugly and remain stationary,

- thereby preventin any-steam leakage past theinner ends of t e valve portions. 7

' It need scarcely be stated,by way of conclusion, that my improvedva'lve construc- .tion is not necessarily limited'tothe particular field of use hereinbeforereferred to in describing thesame; for it may be -advan-;.

tageously employed wherever it is desirable to secure a nice balancing of action in a valve of the type in hand.

' Other modes of'applying the dprinciple of my invention may be :em loye instead of the one explained, change eing made as regards the mechanism herein disclosed, rovided the means stated by any" of the fol owing claims or the equivalentof such stated means be employed.

I therefore particularly point out and distinctly claim as my invent1on:

1. Valve mechanism, including a cylindrical casing having in its periphery an inlet port and an outlet port; and a hollow cylindrical valve oscillator in" the casing and having an open end adhpted to afiord communication between the interior of said valve and the inlet port of the casing, the valve having adischarge port adapted to establishcommunic'ation between its interior and the outlet port of the casing, and having substantially opposite its discharge port, a port constantly opening from its interior against the blank wall of the casing.

2. Valve mechanism, including a cylindrical casing having in its peripher an inlet port and two outlet ports; and a ollow cylindrical valve oscillatory in the casing and having an open end adapted toaiford communication between the interior of said valve'and the inlet port of the casing, the valve having two spaced discharge ports adapted to register with the outlet ports of the casing and thereby establish communication between the interior of the valve and the outlet arts of the casing, the valve also having, su stantially diametrically opposite the space between the discharge ports, a port constantly opening from its interior against the blank wallof the casing, the aggre' ate area ofthe discharge ports being slig tly greater than the area of the opposite port. Signed by me this 2nd day of March, 1911.

CHARLES G. BURTON. Attested by ANNA L; GILL, JNo. F. OBERLIN. 

